Ratchet-brace



(No Model.) 3 SheetsSheet 1. J. JQDILLENBECK.

RATGHBT'BRAGE. v No. 535,682. Patented Mar. 12,1895.

INVENTOR col @TDiUcn b6021 ATTORNEYS.

WITNESSES.

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(NoModelJ 3 Sheets-Sheet 2.

' J. J. DILLENBEGK.

RATOHET BRAGE. No. 535,682.- Patented Mar. 12, 1895. w

INVENTOR WITNESSES: I 15; 01 @705": n Zea z. fifiaawmm BY ATTORNEYS.

J. J. DILLENBEOK.

RATGHET BRAOE.

Patented Mar. 12, 1895.

INVENTOR V V m Gua --01, atommbwz ATTORNEY-S.

NrTnD STATES PATENT OFFICE.

JACOB J. DILLENBECK, OF PULASKT, NEYV YORK.

RATC H ET-BRACE.

SPECIFICATION forming part of Letters Patent No. 535,682, dated March 12, 1895.

Application filed January 22, 1894- Serial No. 497,583. (No model.)

To all ZUhOWb it may concern.-

Be it known that LJAooB J. DILLENBEOK, of Pulaski, in the county of Oswego, in the State of New York, have invented new and useful Improvements in Ratchet-Braces, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

My invention relates to ratchet braces'or bit-stocks for use in boring or drilling, and which are convertible into a solid DIELGByOI' vice versa, and which are also convertible into a right or left hand ratchet, so that the right hand ratchet can be used in advancing the tool, and the left hand one in withdrawing it.

My object is to produce a ratchet brace in which the tool holding jaws are mounted upon a shaft adapted to be ratchet driven to the right, by the oscillatory movement of the handle, to bore a hole; in which said shaft is adapted to be reciprocated so that the oscillation of the handle will, through another ratchet, drive the shaft and tool to the left as for the withdrawal of the tool from a hole; in which means are provided for locking the handle and tool-driving shaft together so that then the handle must be rotated, in either direction, in the'same manner as a solid brace, the ratchet mechanisms being inoperative, and said shaft locked against reciprocation; in which the tool-gripping jaws are mounted upon the shaft in such manner that their rear ends are adapted to open outwardly when the front ends open; in which the tool shaft is provided with lateral lugs, on opposite sides, adapted to engage with slots or grooves in the inner surface of the exteriorly threaded sleeve and to traverse the same when the hand-nut is operated to open or close the tool-jaws.

My invention consists in the several novel features of construction and operation hereinafter described and which are specifically set forth in the claims hereunto annexed.

It is constructed as follows, reference being had to the accompanying drawings, in which- Figure 1, is a side elevation of the brace. Fig. 2, is an enlarged side elevation of the same, omitting part of the handle. Fig. 3, is

a vertical longitudinal section of Fig. 2. Fig. 4, is a side elevation of the tool driving shaft and the jaws mounted thereon. Fig. 5, is an elevation of the rear end of said shaft. Fig. 6, is a longitudinal section of said shaft and jaws. Fig. 7, is a top plan of said shaft and jaws. Fig. 8, is a front elevation of said shaft. Fig. 9, is an elevation of the reciprocating sleeve or grip block exteriorly threaded, and adapted to close the jaws or release them to open. Fig. 10, is a longitudinal section of the same. Fig. 11, is a rear elevation of the same. Fig. 12, is a front elevation thereof. Figs. 13 and 14. are elevations illustrative of the reciprocation of the tool-driving shaft. Fig. 15, is a sectional elevation of the drive shaft, the right and left hand ratchets and the spring pawl. Fig. 16, is a frontelevation of the removable cap, carrying the bolt by which the handle and the driving shaft are locked, showing the bolt projected. Fig. 17, is a like view of the same showing the bolt drawn up. Fig. 18, is a rear elevation of the same. Fig. 19, is an elevation of the inner side of the pawl carrier and pawl. Fig. 20, is a front elevation of the same, showing the pawl and spring therein. Fig. 21, is a vertically sectional elevation of the same. Fig. 22, is a side elevation of the angular and tubular sleeve secured to the handle. Fig. 23, is a rear elevation of the same. Fig. 24, is a vertical section thereof. Figs. 25, 26 and 27 show respectively a side elevation, a front elevation, and a vertical longitudinal section of one of-the tubular ratchets.

A is the handle provided with the hand rest -a and the hand-grip -a', secured to the tubular arm b in any ordinary inanner, said arm being integral with the body --balso tubular and both being interiorly connected.

Bis the jaw shaft upon which the tubular IOU its point to snap from one ratchet tooth to another, with whichsoever ratchet it may be engaged.

The ratchets c- -d are provided with oppositely arranged teeth, the ratchet c being hereinafter called the left-hand ratchet, and dthe right hand ratchet. Said shaft is also provided with a shoulder 7c and a collar 7c'-, and mis the hand-nut shouldered interiorly to engage with said shoulder and collar and having its rotating bearing upon said shaft between the ratchetd and said collar. This nut is tubular, open in front, and interiorily threaded, to engage with the grip-block or sleeve m'- through which is an opening n at the rear of substantially the form shownin Fig. 11,and provided with the side grooves n'-, said opening being changed at the front end to substantially the form shown in Fig. 12, by the convergence of the walls of said sleeve, as at m. The tool gripping jaws -p are rearwardly mounted loosely upon the pins p' and normally lie between the flanges r upon the shaft ]3 (Fig. 8) and are also recessed interiorly to receive the squared shank of a bit or tool in the ordinary way. A spring, or springs ''r is placed in an opening in the shaft B and bears outwardly against said jaws, so that the rear ends of said jaws can swing or be forced outward, to permit said recesses to fit onto tool shanks of varying sizes and grip them for their whole length. The front ends of said jaws are beveled off to properly engage with the interior of the front end of said sleeve, and to engage therewith both to prevent the rotation or twisting of said jaws out of alignment and also to close them as said grip is drawn back by said nut. Lugs -s upon the shaft ]3 engage with the grooves n to prevent the rotation of said grip, or the transmission of any dangerous torsionial strain through it, to the jaws or said shaft.

When strain is applied to the handle, as in boring a hole the shaft and ratchets slide back through the body bringing the ratchet d into proper engagement with the pawl for the right-hand continuous or oscillatory movement of the handle; and when the strain is reversed, as to pull out a tool, the ratchet c is brought into engagement for either of the left hand movements of the handle.

A cap -t-. is connected to the rear of the arm b, provided with a substantially T- shaped opening through which the rotatable button u projects, said button being connected to the bolt o within said cap, and when said button is horizontal,then saidbolt is out of engagement,and its spring 1;'- is compressed, and when it is vertical, as in Fig. 16, then the lower end of said bolt is forced down so that its point enters a recess w (Fig. 3), in the ratchet cand thereby locks the handle and tool shaft rigidly together and the brace then operates as a solid brace, with no ratchet action.

The jaws, the grip and the hand-nut together constitute the tool-head, and the arm b and the body b'. are in reality a part of the handie.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a ratchet brace, the combination with a handle, of a longitudinally movable tool head carried by the handle and extending at right angles thereto, two ratchets secured on said head and having their inner toothed faces lying within the vertical planes of the handle, a single pawl pivoted within the handle and having its free end projecting into the space between the toothed faces of the ratchets on the tool head and springs secured within the handle and bearing against opposite faces of said pawl, substantially as and for the purpose specified.

2. In a ratchet brace, the combination with the angular piece 17,6, of a tool head extending through the portion 1'), and movable longitudinally therein, ratchets secured on said tool head to move therewith and having their inner toothed faces Within the planes of the handle arm I), of the body, a single pawl pivoted in said arm I), and having one end extending into the other arm 1), between the toothed faces of the ratchets on the tool head and springs secured at one end within the arm I) and bearing at their free ends against the pawl therein, substantially as shown and described.

In witness whereof I have hereunto set my hand this 13th day of January, 1894.

J. J. DILLENBECK. In presence of (J. W. SMITH, HOWARD P. DENISON. 

